Process for recovering the residual soap from carbonate-of-lime sludge



Patented June 26, 17923.

UNITED STATES PATENT oF r ce.

PETER KREBITZ, OF MUNICH, GERMANY.

PROCESS FOR RECOVERIN G THE RESIDUAL SOAP FROM CARBONATE- No Drawing. Original application filed June 15, 1921, Serial No. 477,787.

filed November 16, 1922.

To all whom it may concern."

Be it known that I, PETER KREBITZ, a citizen of Germany, residing at Munich, Germany, have invented certain new and useful 5 Improvements in the Processes for Recovering the Residual Soap from Carbonate-of- Lime Sludge, of whichthe following is a specification.

My invention relates to an improved proc-.

ess for recovering the residual soap from carbonate of hme sludge, and the present application constitutes a division of my co-,

pending application Serial Number 477,787, filed June 15, 1921.

In the manufacture of soap, it was heretofore impossible to recover the total residual soap from the carbonate of lime sludge, unless the original soap mixture contained no less than twenty-five per cent of cocoa-nut oil or palm-seed oil; and in cases where certain kinds of fat, such as animal fats, hardened fish-oil and others, were used in the original soap mixture, such recovery was not possible even if twenty-five per cent or more of cocoa-nut oil or palm-seed oil constituted a part of the original mixture.

The object of an economical process for the recovery of the entire residual soap in the carbonate of lime sludge, and I accomplish this object by adding to the sludge from one to six per cent of resin soap, content of the sludge shall consist of at least twenty per cent of saponified resin.

y improved process may advantageously be carried out as follows :To 4500 parts of the carbonate my invention is to provide so that the entire soap Divided and this application Serial No. 601,391.

invention consists in so that the entire soap content of the sludge will consist of at least twenty per cent of saponified resin. By this addition of from one to six per cent of resin soap to the sludge the soap mixture otthe sludge is so modified that it contains at least twenty per cent of saponified resin whereby complete removal of re sidual soap from the sludge is made possible. l i

I claim In the hereindescribed process of recovering residual soap from carbonate of lime sludge, the step which consists in adding to the sludge a suflicient quantity of resin soap so that the entire soap content of the sludge will consist of at least twenty per cent of Saponified resin. Initestimony whereof I have afiixed my signature.

PETER KREBITZ.

between oneand six per cent of resin soap,

OF-LIME SLUDGE.

material, and the es- 

